MISCELLANY 



7S9 



INTEREST AT 6 AND 7 PER CENT. CON. 



A contrivance used to measure tit- 

 rate ofa flhij>'- vel,,, ity through tin- \vai. 

 this purpose there are several inventions, but tin* 



one inovf L ',-iier:illY i|v.,l i calle.l 



"inntn l'). It i< a j.iere of thin board, 

 forming the quadrant of a circle of about six 



* I balanced by a small plate of 



1- ,i.| n:nli-.| on tin- circular part, HO aa to swim 

 |N-r|M-inlirul:irlv in tin- water, \\ith the greater 

 part Immemd. One end of a line. called tin- 

 .,1 to tin. loir. \vhili the other 

 ia wound round a i- 1 \\ lien the log is thrown 



